Dispensing pump attachable to the neck of a container for viscous material, having an inlet conduit extending into said container



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Patented Apr. 3, 1951 UNITED STATES GIF-'FICE DISPENsING PUMPjATTAcIrAELE trof frH-EI NECK oF-,A CONTAINER' Foiri vIsooUs MATERIAL, HAVING AN-V INLETV ooN-DUrr EXTENDINGv IN'ro SAID ooNf-rAINEa California` Application .l une'12, 1947,-Serial-No. 754,091?,

This inventionfrelates ,to dispensers and more especially to a` dispenser for a viscousmaterialVV such as catsup orother food productscontained ina bottlei andlcoversrimprovementsvon my pending application, Serial No. 643,910, led January 28, 1946, now Patent No. 2,521,961, dated Sept. '12, 1950.

Anzobjectof the inventionfis to provide 'asimple, practical and inexpensive dispenser of. the character described.'

Another object of the invention is to provide novelimprovements in a'fplungertype dispenser for usewith a bottled material of relatively vis,V cous consistency, such ascatsupfor the like.

Another objectief the invention isy to-provide an improvedmeans for effectingY the engagement or thefdispener' withv the neck of anassocatedv bottle.

. A further object of. theinvention istoprovide improved plunger actuatingv means including` a novel plunger seal.

Other, objectsv and advantages will appear and be brought out more fully in the following. speci-V ilcationv considered with.' reference to thel accom-- panying drawing,,throughoutA which like parts are designated by like anumeralsf.

Figure l is an elevation View, partly in-sec'' tion, ,showingmy" invention' in association with a catsup bottle.

Figure 2 is-a'neleva'tion' View, partly in section, showing` aV dispenser and bottleneck engaging means.

Figure 3 is a sectional View taken along the line 3-3 of Figure l'.

Referring more particularly 'to the drawingI show a catsup dispenser in association with a catsup bottle I0, .the bottle havinga reduced Aneck I2 and an upper annularA rim Mat theend .of a throatvIG ofthe. neck.

My novel `catsup dispenser.Y comprises vaitu'l;1ilar memberY or cylinder IB, the. upperv endo'f.y which issecured to apcollar element Y2E| which i'sio'rme'd with an annularv recessZI4 to receive tl'eendiof tubular member I 8. A resilient sleeve 22, of rubber or similar material, is adaptedto t on neck I2 and has an internal annular groove 23 which interts with a flange 24 on collar 20, thereby effecting a resilient seating engagement for the collar on the neck of a bottle, the engagement, however, being detachable, as should be obvious. Sleeve 22 has an annular groove 25 which interts with an enlargement 26 of neck I2 and more effectively provides the attachment to the neck. Sleeve 22 thus effectively centers collar 20 with respect to the neck of the bottle.

, over collar 20', an aperture' 29"]oe'ingprvidd lfdi element 44'2 lemeiitr 4llia`sarv vertical l'jofre 45? forming. a guide for the'- steiii portion' 4'8"'y of; a` check Vvalve 50 whihnorr''allyres't's Zonvalveseat 35` and`closes .the port' opening', thereof.

Al tubular plunger 5'2l`is reciprocably'disposd in tubular member I8 andism operatively cr# nected with a-piston`53b`y anj integral .ordetacl' able interconnection, plunger 52' extending through an aperture 521" in collarN 20"andfl'iav'i'rg a reduced dametral portionl55'forefectiggeii gage'me'ntf withapist'n' 5'3 Tand'hav'n'g an enlarged portion 5B'. adapted-` to effect anabtrn'ent' e; sagement with` anlaiinula'r' shlder5'8 "o'ri` collar 2'0'L A'groov'e 5I'isformedbetvvenpiston`5 and enlargementI 56"andasealiiigrig '59l of"aiiyfs'iitA ableY sealingl 4material -is pisitionedJ groove" 51T to effect a fluid"seal-`-'betwe'eriv plunger 5'2"a"nfd tu# bular member I8'.V Plunge'r 5'2'lfiasabor6lfaiid piston 53 has'an'enlar'gedbore" 61|, ashb'ulder sz' being formed at the"Y upper gnu ofi' bore` sti Av coil Springl 63" extends' into bo' 6l and' eli'- gages web 4ZI'to. retain the web in engagement with reduced portionf 3'0`o'f thetbular member.

'mIhe upper endofb'ore llprovides'a.valvesat 5ft for a lisperaisingya'lve` 66-wh`ich" is -frmed`vvitli a-plurality of llutes` 68'to permit thepassageol the catsup orother; dispensed material thereby. A cap member 10 is providedfr the upper end of plunger 52 and has a stop shoulder 12 for valve 66 and a dispensing neck 'I6 extends from cap member 'I0 as shown.

Tubular member I8 is provided with a port or slot at its upper end adjacent neck I2 of the bottle to act as a bleeder to admit air into tubular member I8 during the pumping action of plunger 52, thus preventing the discharge of dispensed material between enlargement 56 of the plunger and the wall portion of the tubular member I8.

The operation of the invention should be apparent from the foregoing description. Upon reciprocation of plunger 52, a partial vacuum will be created in cylinder I8 and the bottled material, such as catsup or the like, will be drawn upwardly through tube v32 into the cylinder and out through the piston and dispensing neck 16. During the dispensing action, the upward movement of piston 52, which results in a dropping of valve 66, causes a slight return movement of the dispensed material in neck 16, and there are no surplus-drops of the material, which would otherwise drop off or flow backwardly along the dispensing neck.

Collar 20, sleeve 22 and retainer 21 provide an effective seal between the collar and the neck of the bottle and no loss or seepage of the dispensed material can occur at the neck of the bottle. Furthermore, the seal, provided by ring 59, effectively prevents escape of the dispensed material past and externally of piston member 53 and through aperture 54, which might otherwise occur if such a seal is not provided.V

Although I have herein shown and described my invention in what I have conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of my invention, which is not to be limited tothe details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices and systems.

Y Having thus described my invention, what I claim and desire to secure by LettersPatent is:

1. In a pump assembly adapted for insertion into bottles through the neck thereof the combination of a retaining and sealing device adapted to cooperate With the neck of a. bottle comprising a collar having a diameter'greater than the inside diameter of the neck and secured to said assembly, said collar having a shoulder adapted to overlie the rimof the neck, a sleeve of resilient material having an end portion surrounding and engaging the collar and a free portion smaller in inside diameter than the outside diameter of the neck, and a hollow cup-like retainer having a centrally perforated end in engagement with the collar and having a skirt, a portion of the skirt adjacent the perforated end forming in conjunction with the collar a confining space for reception of the end portion of the sleeve and adapted. thereby to hold said sleeve in position on the collar.

2. In a pump assembly adapted for insertion into bottles through the neck thereofv the combination of a retaining and sealing device adapted to cooperate with the neck of a bottle comprising a collar member having a diameter greater than the inside diameter of the neck and secured to said assembly, said collar member having a shoulder adapted to overlie the rim of the neck, a hollow cup-like retainer member having a centrally perforated end in engagement with 4 the collar member, portions of said retainer member and collar member adjacent said perforated end forming an annular space therebetween, an annular configuration on the portion of one of said members in the area of said annular space of diameter diierent from the diameter of said portion of the member bearing said configuration, a sleeve of resilient material having an end portion surrounding and engaging the collar member and engaging said configuration and a free portion adapted to engage the neck, said hollow cup-like retainer member having a skirt, a portion of the skirt adjacent the perforated end forming in conjunction with the collar member a conning space wherein the end portion of the sleeve is positioned, said retainer member and collar member being adapted thereby to hold said sleeve in position on the collar member.

3. In an elongated pump assembly adapted for insertion into bottles through the necks thereof the combinationof a retaining and sealingdevice adapted to cooperate with the neck of a bottle for holding the assembly in place comprising a collar member having an outside diameter greater than the outside diameter of the pump assembly at the Widest part thereof and secured to said assembly, said collar member having a shoulder adapted to overlie the rim `of the neck, a sleeve of resilient material having a thickened portion surrounding and engaging the collar member and a free portion of reduced wall thickness larger in inside diameter than the outside diameter of the collar member, a hollow rigid cup-like retainer member having a centrally perforated end in engagement with the lcollar 'Y member and a skirt portion, the skirt portion adjacent the perforated end forming in conjunction with the collar member a conning space wherein Ythe thickened portion of the sleeve is positioned, a flange on one of said members in engagement with the thickened portion of the sleeve whereby said sleeve is held in position with respect to the collar member, the remaining skirt portion of the retainer member having an inside diameter greater than the outside diameter of the free portion of the sleeve.

, D FLAVIUS BACHELLER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

